Observatory · observe first
Follow the allocation change
Matched S&P 500 members → sector → industry → sub-industry → company. Each step uses the same percentage points.
Historical time machine
Historical observation
20182026
1 · Sector
Weight and 12M allocation change
2 · Industry
Inside Information Technology
Systems Software4.49%-2.69 ppTechnology Hardware, Storage & Peripherals5.94%-2.26 ppApplication Software1.63%-1.54 ppIT Consulting & Other Services0.57%-0.61 ppSemiconductor Materials & Equipment0.91%+0.36 ppSemiconductors10.63%+0.25 ppElectronic Components0.35%+0.16 ppElectronic Equipment & Instruments0.18%-0.12 ppInternet Services & Infrastructure0.07%-0.07 ppCommunications Equipment0.95%-0.07 ppTechnology Distributors0.02%-0.03 ppElectronic Manufacturing Services0.13%-0.01 pp
3 · Sub-industry
Inside Systems Software
Systems Software · weight
4.49%
Industry change · 12M
-2.69 pp
Systems Software · contribution
-2.693 pp
Company participation
17%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 2026 · sorted by absolute contribution to 12-month change
| Company | Country | Market cap | Universe weight | 3M contribution | 12M contribution | 12M price return | Above 6M weight average |
|---|---|---|---|---|---|---|---|
| Microsoft → MSFT | United States | $2748.8bn | 4.003% | -3.038 pp | -2.623 pp | -0.6% | No |
| Fortinet → FTNT | United States | $60.5bn | 0.088% | -0.028 pp | -0.088 pp | -15.1% | No |
| ServiceNow → NOW | United States | $109.4bn | 0.159% | +0.097 pp | +0.081 pp | -34.3% | Yes |
| Palo Alto Networks → PANW | United States | $130.8bn | 0.191% | -0.061 pp | -0.078 pp | -6.0% | No |
| CrowdStrike → CRWD | United States | $24.6bn | 0.036% | -0.022 pp | +0.036 pp | +10.7% | No |
| Gen Digital → GEN | United States | $11.4bn | 0.017% | -0.016 pp | -0.022 pp | -27.7% | No |
Company contributions use weights among matched S&P 500 members and add through each level without rescaling. Companies without matched shares and prices are omitted. These observations do not establish official index weights or actual fund flows.